Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8241389 | Method and device for producing nitrogen fertilizer, removing phosphate from organic waste products, and limiting the potassium concentration | Herbert Spindler, Thomas Meier | 2012-08-14 |
| 7887615 | Method and device for producing nitrogen fertilizer from organic waste products | Herbert Spindler, Thomas Meier, Michael Teske | 2011-02-15 |